Pneumatic vehicle shoe



f Patented Feb. 17, *1931Y I I i 'i Y l Y UNITED STATES PATENT oFFlcE CHAELES E, GoonEEiEivn, on NEW JERSEY, Y i pii-Eirmnfr'ro VEHICLE sHoE l prlilcatie tied oc'wim 1, 1927. semina. esame,

.My present invention relates to an imed upon the usual type of demountable rim, provement in pneumatic tires for vehicles which is also in section.V and has for itsv main object the development Fig. 2 is'a'reduced assembled view of my of a shoe which is built up of sections, thereby device showing the tire as it appears proper-VV to provide for renewalotdamagedsections ly assembled. t' n y 5 of the shoe by replacement, inthe event of F ig. 3 is a longitudinal sectional viewof local damage of such sections through acci- Vmy tire taken on the line 3 3, Fig. l, looking dent. t Y in the direction ofthe arrow. i f

Another object of my invention `is to pro- `Fig. 4 is a perspective view of one sectional 1'0 vide means thereon whereby, ina sectional unit of my shoe construction showing the e@ tire' of the type' about to be described, a recomponent parts thereof. Y Y newable tread portion is provided, to absorb Fig. 5 is a top view of the inner'interlock- 3,11 0f theV traction wear, so Jthat, when necing nterliner showing the key portions theret essary, new sections of the tire may be inin whereby the unit tire sectors are bound to- 1'5I serted, as required, withoutdetriment to the gether. Y continued use of the tire, and without pre- In my present construction mytire comventing re-use of the traction stripV thereon prises a series of similar radially developed until it is worn beyond further service. a sections or units '1, Fig. 2, each of the units Another advantage of my construction is being separate one romvthe other, but being in the provisionof means whereby in said of like construction and ofsuch suitable uniy@ sectional tire, the cooperating sections utitary dimensions that When assembled they lized in forming a complete shoe are interwlll make a complete assembledv shoe and, locked, one with the other,bothby means proallowing for use therewith, of 'a'replaceable vided upon the associate sections themselves enel renewable tread portion 4 and the inand by the cooperating additional means terlor use oigan inner pneumatic tube to be is therein, such as Van interliner which coordifilled With air under pressure, in the present nates with the assembled sections of the shoe day custom t0 interorly interlock them together as `'a kTo this end the unit sectors l, as indicated v unit e Y in the Various views and more especially in Another advantage 0f my device is the F 1g. l, are made up Of `either fabric OI COId 3:] provision 01: means upon the traction or road inner COIeS, IIO ShOWIl, it being understood wearing strip 'of the tire whereby it .is also that these cores are made in any suitable maninter-locked with the sectionalV structures nel" as 1S Customary at the presenttimefor lforming the shoe portion, thereby to further the USlll' typ? @f pleumatl Shoe COHSIUC- combine them together into a unitary strucnon an@ haVm tmf/Same gene'l external 85 ture and to prevent Creeping of Such tread contour 1n cross-sectional area as any' stand- Section', ard type ot known s hoe, with the exception Theseand other capabilities willbe ascerik? each Setloil l 1S of .abrllc .OT Cord re' tained as the herein description proceeds and nvprcced Whlh l's minded into and proteqted it is obvious that modications may be made in y a @fromm mg .Guber rubbfr bqdy Portion 9a the Various features of my device Without de after the manner in tne construction of tires.

Such outer molded rubber portion protects parting from the sp1r1t of t-he herein invenn .U i tion and without contravening vthe 4scope of gloefqbrlc remforcl 1g Cores aba St deftenom the appended' (lalmsf he bead 5 of the said tire may be strength- 95 112th@ fglaWmgS` l i A ened against being pulled from the rim by Flgl 1S EL tIlIlSVelSQ VIEW 0f 011 0f the the inclusion therein of any suitable means in sectors of my improved tire showing the tread the form otV a compacted fabric filler, not portion and the liner and inner tube'portions shown, which is also molded within the outer insection, the said tire being shown as mountrubber contour of the yshoe forming unit and les1 which bead acts as an anchorage for the tire section when engaged by the rim 67 in operative position.

At the upper end of said unit 1, and as disclosed in Figs. 1 and 4, there is provided a channel 12 which is provided with an indent 14 at its intermediate tread section and with similar intermediate side indents 13 provided at the opposite side walls thereof, said indents 13 and 14, and the channel, forming interlocking keyways for the reception therein 'of a renewable rubber tread forming section 4, Fio's. 1, 2 and 3. v

baid tread forming section 4 may be of circular endless construction, is made of suitable. rubber stock to resist wea-r and is provided near its outer sides, as in Fig. 1, with circular and endless reinforcing wires or cables 4', as shown in the sectional view of said treadl in Fig. 1. Said tread stock is also provided with projections, such as lugs 13 and keys 14 at its sides and bottom to cooperate and engage into the indents 13 and 1 4 of each indi? vidual sector unit of the assembled tire, there by to aid in holding said tire units as a unitary whole and simultaneously to prevent ereeping Vof the tread section 4, under the traction forces encountered in use, when in operative position upon the rim.

The inner or tube chamber portions of these tire sectors 1 are provided with a transversely located, integrally molded rubber projection 15 which is located about midway of each shoe forming` sector 1 in such a manner as to reinforce the section to which it is associated. A n interliner 3 of suitable associate contour and being endless and made up of molded fabric and rubber, is located wit-hin the upper portion of the said slice sectors 1; the said interliner 3 is provided with indents 1,6, 5, in its outer circumferential surface whereby to mesh and engage with said transverse keys 15 thereby to further reinforce the said units and to aid in the integral-` izing of the assembled units as a whole. This latter construction is fully shown in the transverse sectional view, Fig. 1, and also in the longitudinal sectional view, Fig. 3.

The shoe forming sectors 1 are further provided with a series of mritual-interlocking projections 11, Figs. 3 and 4, these being, in their preferred embodiment, in the form of a substantially circular outstanding extension 11 carried on one side of each of said sectors 1*, near the inner wall thereof, and on the opposite side thereof each sector 1 being provided with a projection receiving recess 10 which receives therein the associated projection 11 of the adjacent tire forming sector 1. To this extent the sectors 1 are provided with a series of interlocking joints therebetween, said oints substantially surrounding the inner, air tube receiving portions of said sectors 1.

Into all of the foregoing is introduced, in

the usual manner, the customary inner air tube 2, Figs. 1 and 3, and if found desirable, a separate non-resilient tire flap 17, of a substantially arcuate outwardly concave transverse outline on the outer periphery thereof, as shown in Fig. 1, may be utilized to fill in the space between the beads 5, to hold the beads to the rim and to keep the inner part vof the air tube 2 substantially circular in cross-section- When the Vtire is mounted upon the customary type of rim 6 and, after assembly, is locked therein, by means of the usual removable rim 7, and rim lock 8, in accordance with 'the usual construction of Such demountable rims, and air pressureis applied to the interior of the inner tube 2, the tendency of the pressure is. to unify all ofthe separate shoe forming sectors land to greatly reinforce the outer or traction side of the shoe and due to the interlocking joints formed by the extensions 11 with the adjacent associated recesses 10, the tire in its complete assembly is held rigidly in position without any tendency to creep or blow-oftl the rim.

In use should any single sector or unit 1 become injured or destroyed, or any group of associated sectors 1, it is obvious that the air tube 2 may be deflated and removed, the tread portion 4 removed therefrom and new sectors 1 assembled into the shoe to replace those damaged, whereupon ther tread portion 4 may be remounted and the air tube again inflated.

It might be here noted that I make no claim as to the exact method wherebi7 `the sectors 1 may be interiorly reinforced by either cord or fabric construction nor the manner in which the beads 5 may be made to withstand the strains in use, it being understood that such form of interior fabric or cord carcass is utilized in a manner suitable for the purpose of carrying out my present idea of a sectionally built up pneumatic tire shoe.

Having thus described my invention, what I claim is:

1. In a pneumatic tire shoe of the class described a plurality of removable shoe sections, a means for preventing centrifugal disruption of said sections. an indented interliner, positioned interiorly of said shoe sections, and projections on said sections, to engage the indentations on said interliner, thereby interlocking said sections with said interliner.

2. In a pneumatic tire shoe of the class described a plurality of contiguous removable shoe sections, each having thereon a transverse channel, a tread, encompassing said sections, positioned in said channel, and a means for interlocking said tread with each of said sections, to prevent relative sliding motion therebetween.

3. In a penurnatic tire shoe of the class described a pluralityof contiguous removable shoe sections, each having thereon a transverse channel, including an indent, `the channel walls having therein opposed side indents, and a tread, encompassing said sections, positioned in said channel, said tread embodying projections, interlocking with said channel indents, and side lugs, interlocking with said channel wall indents, thereby preventing relative sliding motion therebetween.

4. In a pneumatic tire shoe of the class described a plurality of removable shoe sections, contacting with each other at their ends, an endless tread member, encompassing the outer sides of said sections, lan endless interliner, which is solid in cross-section, positioned in the interior of said sections, interlocking means on the inner sides of said sections and corresponding interlocking means on the outer periphery of said interliner, disposed toregister with said first mentioned interlocking means.

5. In a pneumatictire shoe of the class I described a plurality of contiguous remov- V able shoe sections, having each thereon on the outer periphery thereof1 a transverse channel and a radially disposed central indent in each of said sections, extending inwardly from the bottom of each of said channels, and an endless resilient tread, encompassing said sections, positioned in said channels in contact with the bottoms thereof, said tread embodying therein on the inner periphery thereof inwardly extending projections to it said indents, interlocking with said indents, thereoy opposing relative peripheral sliding mo tion between said sections and said tread and permitting relative radial motion between the parts thereof.

6. In a penumatic tire shoe of the class described a plurality of contiguous removable sections, each having thereon a transverse channel, the walls of said channels having therein opposed substantially radially` disposed side indents, extending through substantially the full depth ofsaid channels, a resilient tread, encompassing said sections, positioned in said channel, said tread embodying therein substantially radially disposed side lugs, to fit said indents, interlocking with said channel wall indents, thereby opposing relative peripheral sliding motion between said sections and said tread and permitting relative radial motion between the parts thereof.

Signed at New York, in the county of New York and State of New York, this 30th day of September, A. D. 1927.

CHARLES F. GOODFRIEND. 

